451544650223 has 4 divisors (see below), whose sum is σ = 451640912568. Its totient is φ = 451448387880.

The previous prime is 451544650217. The next prime is 451544650247. The reversal of 451544650223 is 322056445154.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 322056445154 = 2 ⋅161028222577.

It is a cyclic number.

It is not a de Polignac number, because 451544650223 - 2¹² = 451544646127 is a prime.

It is a super-2 number, since 2×451544650223² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451544653223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48124136 + ... + 48133517.

It is an arithmetic number, because the mean of its divisors is an integer number (112910228142).

Almost surely, 2^451544650223 is an apocalyptic number.

451544650223 is a deficient number, since it is larger than the sum of its proper divisors (96262345).

451544650223 is an equidigital number, since it uses as much as digits as its factorization.

451544650223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96262344.

The product of its (nonzero) digits is 576000, while the sum is 41.

The spelling of 451544650223 in words is "four hundred fifty-one billion, five hundred forty-four million, six hundred fifty thousand, two hundred twenty-three".